The invention discloses a needle plate. The needle plate is capable of replacing needles conveniently, has low cost and is not easy to change position. The needle plate comprises a needle plate body and a plurality of needle sheets installed on the needle plate body. The needle plate body is provided with a plurality of connecting rods with threads at the tail end in the length direction. The head end of each connecting rod is provided with a fixed first positioning block, a moveable second positioning block. The second positioning block is fixed by a nut. One face of each needle sheet is provided with a plurality of U-shaped needle placing grooves. The longitudinal depth and width of each needle placing groove are equal to the maximum diameter of the needle, and the horizontal depth of the needle placing groove is smaller than the length of the needle. A plurality of through holes for passing the connecting rods is installed below the U-shaped needle placing grooves. The needles are placed in the needle placing grooves according to the mode that the point of the needle faces to the outside. The traditional needle plate is replaced by the needle plate formed by a plurality of the needle sheets, the needle sheet with the damaged needle is replaced by new needle sheet while the needle needs to be replaced, the operation is simple and convenient without hurting people, and the needle changing time is saved.